EFAJEMUE, AKPOVI EWAREZI and Covenant University, Theses (2021) THERMOPHILES BIOSURFACTANT PRODUCTION AND POTENTIAL APPLICATION IN MICROBIAL ENHANCED OIL RECOVERY FOR HIGH- TEMPERATURE RESERVOIRS. Masters thesis, COVENANT UNIVERSITY.
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Abstract
Microbial enhanced oil recovery (MEOR) among other enhanced oil recovery (EOR) innovation is an important alternative approach when primary and secondary methods are not productive. The responsible factor for MEOR procedure is the microbes and their by-products like biosurfactants, biopolymers and so on. This study is focused on the use of biosurfactant produced by identified microorganisms in produced-sand from hydrocarbon sandstone reservoir in ex-situ MEOR at reservoir temperature. From the isolation result, Bacillus Nealsonii and Bacillus Amyloliquefaciens were the identified petroleum thermotolerant microbes. These microbes were used for the production of biosurfactant, the broth was used as the nutrient source and kerosene as a carbon source. The produced biosurfactants from the two microbes were applied in the MEOR at temperature (27°C, 80°C, 90°C, 100°C and 110°C) using a reservoir permeability tester equipment. Then we compare the recovery process of Biosurfactant A and B on core sample R1a and R1b. We discover that Biosurfactant B performed better than A at temperature 270C, 800C, 900C, 1000C and 1100C with recovery factor of 55.2% - 46.7% and 64.1% - 0% respectively. Biosurfactant B performed better than A at temperature 270C, 800C, 900C, 1000C and 1100C on core sample R2a and R2b with percentage difference at (49.6% - 46.2%) and (63.8% - 0%) respectively. Biosurfactant B performed better than A at temperature 270C, 800C, 900C, 1000C and 1100C on core sample R3a and R3b with percentage difference at (48.3% - 41.7%) and (54% - 0%) respectively. Biosurfactant B achieved more significant results than Biosurfactant A. Thus these hyperthermophiles biosurfactants are good agents for MEOR.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Mrs Hannah Akinwumi |
| Date Deposited: | 23 May 2022 13:51 |
| Last Modified: | 23 May 2022 13:51 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/15871 |
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